Thanks for all the suggestions: sysctl kern.pool_debug=1 = no change known working board in same slot = no change
hardware version is indeed 06090000 em(4) in same slot = works test using old rge(4) board between two Linux systems = works Are any other drivers similar enough for me to compare with if_rge.c? Perhaps the AMD 5600G or the B550 chipset have quirks not seen before? I could possibly install FreeBSD if that would give any information. thanks again, Geoff Steckel
